Before her weight loss, Sue Partridge, an administrator from Lincolnshire, tipped the scales at 15st 9lbs.
The 44-year-old always dreamt of wearing clothes modelled in her favourite magazines, but struggled to fit into high-street sizes.
The mum-of-four started to gain weight after she started a family with her husband Justin.
Sharing her story exclusively to Daily Star Online, Sue said: “With each pregnancy I gained weight but never really lost it again.”
“Now I’m a size 12 I can shop where I like in complete confidence”
Then after the three pregnancies, one of which were twins, Sue discovered she was suffering from ulcerative colitis, an auto-immune disease in which the bowels become painfully inflamed.
“I had 3-4 courses of large steroid doses over a 12-month period, which caused me to gain even more weight,” Sue explained.
“I also suffered a period of depression, which resulted in more comfort eating. I was trapped in a vicious cycle.”
For breakfast, Sue would gorge on cereal, white toast, croissants or Danish pastries. Her lunches consisted of more carbs and sugar – sandwiches, cakes, crisps and a chocolate bar.
And for dinner, the mum enjoyed large portions of pasta and potatoes.
“That was before the evening ‘snacks’ in front of the TV, which often meant a family sized bag of crisps or an entire tub of Ben and Jerry’s ice cream to myself,” Sue revealed.
“It was such an unhealthy way to live and I was miserable.”
Then after seeing her friend Stacie lose 9st after following the Terri Ann 123 Diet Plan, Sue joined in 2016.
The diet, which was created by founder Terri Ann Nunns in 2012, is made up of three stages.
In the first stage, users limit their intake of starchy carbohydrates and boost their intake of protein, vegetables and healthy fats to kick start the weight loss.
During the second stage, fruit is reintroduced and the intake of starchy carbohydrates is boost before stage 3, which aims to keep the weight loss moving.
After completing the first stage of the diet, Sue said: “The 10-day boost part of the plan was a challenge at times but I can honestly say I never felt hungry.
“I have zero willpower once I feel hungry, so any diet that required me to go hungry would never have worked.”
Sue was stunned to see that she had lost a stone after the first week.
“I thought my scales must be broken, so I went to my neighbour and borrowed hers to double check,” she added.
“Having lost so much on stage one really spurred me on to believe that I could do this.”
Over the next eight months, Sue continued to follow the plan and discovered she could do burpees and sit-ups, which she struggled with before.
Then by November 2016, she had reached her target weight of 10st 4lbs and has kept the weight off ever since.
She continued: “Within a couple of weeks of starting the Terri Ann 123 Diet Plan, my ulcerative colitis symptoms, which my consultants had been trying to get under control for two years, had virtually disappeared.
“I went from monthly to twice yearly appointments and from high doses of medication to a single tablet per day.
“Ulcerative colitis is a chronic disease without a cure, but by changing my diet it has gone from a debilitating illness to something that doesn’t affect my daily life at all.”
Despite being wary of diets, Sue credits the Terri Ann 123 Plan for changing her life.
“Now I’m a size 12 I can shop where I like in complete confidence and I no longer feel like a beached whale when I wear a swimsuit,” she revealed.
“I was totally sceptical of most weight loss plans, believing them to be a short-term fix only, so no one was more surprised than me to discover that this one is actually sustainable! It’s truly changed my life.”